wxhuanart/miniprogram/miniprogram_npm/signalr-for-wx/WechatVersionDiff.js

/**
 * 小程序版本支持
 * @param minimumVersion 最小支持版本号
 */
export var isVersionSupport = function (minimumVersion) {
    // diff
    var compareVersion = function (v1, v2) {
        v1 = v1.split(".");
        v2 = v2.split(".");
        var len = Math.max(v1.length, v2.length);
        while (v1.length < len) {
            v1.push("0");
        }
        while (v2.length < len) {
            v2.push("0");
        }
        for (var i = 0; i < len; i++) {
            var num1 = parseInt(v1[i]);
            var num2 = parseInt(v2[i]);
            if (num1 > num2) {
                return 1;
            }
            else if (num1 < num2) {
                return -1;
            }
        }
        return 0;
    };
    // 获取当前小程序 版本号
    var SDKVersion = wx.getSystemInfoSync().SDKVersion;
    // check
    return compareVersion(SDKVersion, minimumVersion) >= 0;
};